RULE XIXSIGNS AND SYMBOLS OF OPERATION
About 95% of the expressions on this page are considered correct for the default MathSpeak settings, so some of the expressions do not yet adhere to the MathSpeak grammar.
Please refer to the Table of Contents page to find Rules that have been thoroughly modified and proofed.
Ampersand (and, logical product)

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Ampersand 


Asterisk

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asterisk 


Back Slash (divides, is a factor of)

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backslash 


Circle with Interior Dot

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circleddot 


Circle with Interior Plus

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circledplus 


Circle with Interior Minus

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circledminus 


Dagger
 Single

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dagger 


 Double

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doubledagger 


Divison (divided by)

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Divisionsign 


Dot (and)

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dot 


Fraction Line (over)
 Diagonal

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Over



 Simple

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Over



 Diagonal Complex

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OverOver



 Complex

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OverOver



 Hypercomplex

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OverOverOver



Hollow Dot

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circle 


Intersection (cap)

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Intersection 


Logical Product (and, meet)

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Logicaland 


Logical Sum (join, or)

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Logicalor 


Minus
 Regular

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minus 


 Boldface

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Bold
minus 


Minus Followed by Plus
 Boldface Minus Followed by Boldface Plus

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Bold
minus Bold
plus 


 Boldface Minus Followed by Regular Plus

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Bold
minus plus 


 Regular Minus Followed by Regular Plus

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minus plus 


 Regular Minus Followed by Boldface Plus

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minus Bold
plus 


Minus or Plus

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minusorplus 


Minus with Dot over (proper difference)

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dottedminus 


Multiplication (times)
 Cross (cartesian product)

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cross 


 Dot

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dot 


Number Sign; Crosshatch; Tictactoe; Pounds (weight)

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Numbersign 


Paragraph Mark

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paragraphmark 


Plus
 Regular

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plus 


 Boldface

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Bold
plus 


Plus Followed by Minus
 Boldface Plus Followed by Boldface Minus

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Bold
plus Bold
minus 


 Boldface Plus Followed by Regular Minus

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Bold
plus minus 


 Regular Plus Followed by Regular Minus

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plus minus 


 Regular Plus Followed by Boldface Minus

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plus Bold
minus 


Plus or Minus

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plusorminus 


Section Mark

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sectionmark 


Slash (per, over, divided by)

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slash 


Square
 FilledIn Square

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filledinsquare 


 Hollow Square

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square 


Star

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figurestar 


Tilde
 Extended

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extended tilde 


 Simple

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tilde 


Union (cup)

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Union 


Vertical Bar (is a factor, divides)

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verticalline 


§129. Ampersand: When the ampersand is
used in literary context, and without reference to the specific nature of the
sign itself, it should not be regarded as a sign of operation, and accordingly,
the rules of English Braille apply. Otherwise, the symbol in the above list
must be used.
§130. Asterisk, Dagger, Double Dagger, Number
Sign, Paragraph Mark, Section Mark, Star: The asterisk, dagger, double
dagger, number sign, paragraph mark, section mark, and star must be represented
by the symbols provided for them in this Code; the English Braille symbols must
be avoided even when the corresponding signs are used for purposes of
reference.
§131. Fraction Lines: For a complete
discussion of the rules governing fractions see Rule XII.
§132. Intersection, Union: When the
intersection sign or the union sign is modified by a superscribed bar, a
subscribed bar, or both, the combination is not longer a sign of operation but
a sign of comparison compounded vertically (see §147).
These signs
are frequently modified below, and are consequently printed wide enough to
accommodate the modifier. The variable width of these signs must be ignored in
the transcription. Superscripts or subscripts which are sometimes attached to
these signs must be treated in the usual manner for handling superscripts and
subscripts.
§133. Logical Product, Logical Sum: When
the signs for logical product or logical sum are modified by a
superscribed bar, a subscribed bar, or both, the combination is no longer a
sign of operation but a sign of comparison compounded vertically (see
§147).
§134. Minus Followed by Plus, Plus Followed
by Minus, Minus or Plus, Plus or Minus: When the signs for plus and minus are combined either vertically or horizontally, the
combination must be regarded as a single sign of operation. Its components must
not be divided between braille lines in the transcription.
§135. Multiplication: The two common
multiplication signs, cross and dot, must not be used interchangeably in the transcription. The
cross is sometimes modified below.
§136. Slash: The slash must be
represented by the symbol provided for it in this Code. The English Braille
symbol must not be used.
§137. Tilde: This sign of operation is
used predominantly in logic with the meaning of not.
§138. Spacing with Symbols of Operation:
a. A
space must be left on either side of an operation symbol under any of the
circumstances listed below.
b. A space must
not be left on either side of a symbol of operation in any other situation.